NDLI: Analytical expressions for characterising voltage dips and phase-angle jumps in electricity networks

Content Provider	IET Digital Library
Author	Begum, Most Tasneem Ara Alam, Mollah Rezaul Muttaqi, Kashem M.
Abstract	Voltage dips/sags are one of the major concerns for electricity consumers as well as utility service providers. Therefore, the characterisation of voltage dips/sags is required. This study presents a set of mathematical expressions for characterising different types of voltage dips/sags and their associated phase-angle jumps, which are typically found due to faults and/or disturbances in electricity networks. The expressions are derived analytically from the model of the power network containing generators, transmission and/or distribution lines, transformers etc. Four types of voltage dips, namely, A, B, E, and G, which are associated with four major types of faults including balanced three-phase faults, single line-to-ground, double line-to-ground, and line-to-line faults, are considered to derive the analytical expressions. Dynamic simulation results, using a test distribution system, approve the validity as well as the accuracy of the developed expressions. The influence of fault-types and fault-locations is investigated from the mathematical expressions; further, validation is conducted through a simulation study. The analytical expressions, presented in this study, are a valuable tool in the planning stage since the expressions can be employed to characterise during-fault voltage dips at different buses in electricity network without conducting a large number of repeated dynamic simulations.
Starting Page	116
Ending Page	126
Page Count	11
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 1, Jan (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.6348
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-10-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analytical Expressions Balanced Three-phase Fault Distribution Network Double Line-to-ground Fault Dynamic Simulation Electricity Consumers Electricity Network Fault Location Fault Voltage Dips Fault-locations Harmonics Line-to-line Fault Mathematical Expressions Phase-angle Jumps Planning Stage Power Distribution Fault Power Distribution Planning Power Supply Quality Power System Planning And Layout Power System Protection Single Line-to-ground Fault Test Distribution System Three-phase Fault Utility Service Providers Voltage Dip Characterization Voltage Dips-sags Characterisation
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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